Valve



Oct 5 i l K. MARSCHEIDER El' AL VALVE Filed June 20, 1924 2 Sheets-Sheetl INVENTOI? IKA/r1. Mmes elli/asf? /Pr//z/,P 5M mfG/n BY [ll/L: JAI/u.;/QM

A A TTURNEYS WITNESS oct.' s 1926. 1,602,236

K. MARSCHEIDER ET AL VALVE Filed June 20. 1924 2 Sheets-Sheet 2 mit-Ss rAno/Mfrs' Mmm/L Patenten oa. 5, 1926.

mi. manscnmnnn, 'or BERLIN-ernaar., AND Aarnua SALINGR. or BERLIN, GEB-um, .Ass'IGNons T o a nonsre, e. M. B. It., 0F BERLIN-MGEL, GERMANY, A

VALVE.

Application illedIune 20, 1924, Serial No. l721,171, and in G/ermanyyApril 30, 1924.

This invention relates to valves andconsidered from the standpoint ofcertain of its principles. relates more particularly to that typeof'valve known as swmglng dlsc 5 valves. 'n

It is the principal object of this inventlon to provide a valve of newand improved construction which willgive a maximum of service andeiliciency under the most severe t l and exacting hard usage, whichmaybe readily interchanged for either manual or power actuation and whichis provided with various safety devices to prevent accidentaldisconnection of the actuating parts and to .l insure theproper'alignment and seating of the valve seating surfaces. n

In the drawings forming a part hereof in which an example of ourinvention is shown without defining its limits, Fig. 1 is a centralsectional view showing the valve in open lposition and provided with a.lfriction bearmg and hand'wheel; Fig. 2 is a view simllar -to Fig. '1showing the valve provided with an actuating gear' and aninterchangeable ball bearing, the valve disc being shown in closedposition Fig..2 is a partial front view of a ydiiierent' form of gearingand bracket therefor; Fig. 3 is a sectional detail taken on the line 3-3of Fig. 1; Fig.

4 is a section on the line 4-4 of Fig. 2; Fig. 5 is an end view of thestructure shown in Fig. 4; Fig. 6 is a detail of the locking piece shownin Fig. 5 and Fig. 7 is an enlarged detail showing" the configuration ofthe enw gaging surfaces of the valve disc and casing,

and Figs. 1 and v2 showing the manner of regrindin' the contactingsurfaces of the valve l disc an valve casing.

te The numeral 10 indicates the main casing of the valve which isprovided in accordance with the usual constructions of devices of thecharacter with the lian ed inlet 12 and l outlet 11 for connecting. t evalve to the usual pipe lines. The upper open end of the casing 1.0issurrounded by an annular .ange 13 to which is bolteda casting .14having a cup-shaped bonnet 15 at its lowerl end,

which defines with the main casing 10, a 50. chamber' 16 in which thelink mechanism foil supporting the `valve disc 17 is mounted.

Fig. 8 is a central section similar to.

For the purpose of clarity of description the various parts of the valveconstruction will be described under the'following headings: Linkmechanism for supporting and actuating the valve disc; B, Means forpreventing leakage past valve actuating rod; C, Connection of valve discto linkin -mecha-l nism and locking means therefor; Means for preventingtaccidental disconnection of link mechanism; E, Interchangeable meansfor actuating the link mechanism and valve, and bearings therefor; F,Special configuration of valve disc and valve casing surfaces; G, Valveregrinding means.

i A. Link mechanism 'for supporting omai actuating the val/ve disc.

The valve disc 17 is supported for swinging movement within the chamber16 upona supporting arm or link 18 pivotally con-A nected` by a pivot-pin 19 'to the casing, the

axis of which `pivot pin is the center of.

revolution for Ithe vswinging movement of the valve from the openposition shown in Fig. 1 to the closed position shown in Fig. 2.

The end' of arm 18 removed from the pivot l pin is reduced and flattenedand fits between the arms 20, of a yoke-shaped -link 21; said link andarm being pivotally connected t0- gether by a pintle 22. The supportingarm or link 18 is provided at a point between its extremities with anapertured boss 24 which projects laterally from and at an angle to saidarm.Y A pressure bolt 25 is received within -said apertured .boss andserves tov connect the valve`disc tothe link mechanism as willhereinafter be more fully described.

- The yoke shaped link 21 has its upper end I 'pivotally connected byany suitableA means such -as the pintle 26 to a slide 27 which as shownin Fig. 3 is substantially C sha ed in horizontal cross section and isadapte to slide'within `the chamber 16. The slide 27 is provided with apair of inwardly extending,` aligned, 'apertured' bosses l28 in whichthe pintle'26V is rotatably mounted, and said slide is'supported withinthe chamber 16 by the lower end of the valve actuating rod orspindle 29.The lower end of valve rod 29 is threaded to en age withinascrew-threaded hole provide in a horizontallv extending web30 formedintegral -with the slide 27 and said valve rod is preferably rivetedover after being screwed home in the web 30 todhold the rod and slidesecurely connecte B. Means for preventing leakage past naive actuatingrod.

The upper face of the web 30 is counterbored concentrically of the screwthreaded aperture for the valve rod 29 to provide a recess in which aring 31, preferably of a non-corrosive nickel alloy is seated, and saidring is securely held or embedded within its recess by an annular flange32 formed on said valve rod. The upper face of `said ring 31 is a planesurface and is adapted to Contact with a similar surface. of acooperating ring 33 also constructed of non-corrosive material andpressed or rolled into an annular groove formed in the lower face of thecup shaped bonnet 15 of the casting 14. Thel plane surfaces of the rings31 and 33 are preferably ground to form 'afluid tight joint whichprevents the full pressure of the iiuid passing through the valve casingfrom being exerted against the packing contained in the stuffing box 35,when. the valve is` in the full opened position shown in Fig. 1. Thestuiing box 35 which as shown is formed integral with the casting 14,may be of any well known construction and may contain any of the usualpacking substances held within the stuling box by any suitable meanssuch as the gland 36.

6'. Unnection of 'valve dise to linking nwchanism and locking meanstherefor. The inner face of the valve disc 17 is provided with acylindrical recess in which the enlarged head 37 of the pressure bolt`I25 is received and said recess is screw threadl ed to receive acup-shapednut 39. The inner end of the cup-shaped nut terminates shortof the enlarged head 37 to provide clearance for a limited oscillationof the disc 17 upon the pressure bolt. An expansion spring 40 isconfined between the nut 39 yand head 37 and serves to hold the discfirmly against the rounded outer face of the bolt head 37, but permitsrotation of the disc upon said bolt. After vthe nut 39 has been screwedinto position upon the disc 17 it is locked against rotation by means ofthe locking screw 41.

That portion of the pressure bolt about which the spring 40 is coiled isof larger diameter than the remainder of the bolt to provide a shoulder,which is held firmly against the apertured boss 24 .of the supportingarm, by means of a ta ered key 42,

end, said endthrough the wings being of l greater width than the key 42.After the key 42 has been driven home, the locking member is bentbackwardly upon itself and is inserted into thel slot 43, after whichthe shank portion is bent about the outer periphery of the boss 24.While the frictional en' gagement of the tapered key 42 with the wall ofits slot and with the top face of the boss 24, will in most cases besuiiicient to prevent the key from becoming loosened,

the engagement of the shank portion 45 of the locking member will serveas an added security. As the end of the locking member having the wings46 is wider than the key slot, even in the improbable event of the shank45 becoming straightened so as to permit the key 42 to move outwardly ofits slot, the key will be prevented by said wings from falling entirelyout of the pressure bolt.

D. Means for preventing accidental disco/n4 nection of -Zink mechanism.

In order to prevent the pivot pins 22 and 26 from becoming accidentallydisconnected, said pins have secured thereto the keys or projections 50andV 51 respectively; which keys are. preferably secured by spot weldingwithin suitable keyways provided in the pins, although any equivalentlsecuring means could obviously be substituted. It

'will be noted that the keys 50 and 51 are located substantiallymidwayof their respective pins, and that when the parts areV lin the assembledposition shown in-Fig. 3 the key 50 of the pin 22 lies within a keyway50a cut in the arm 18 and between the arms 20 of the yoke-shaped link21, while the key 51 of pin 26 lies within a keyway 51a ofthe link 21and between the opposed faces of the bosses28. In order to permit thepins 22 and 26 to be placed in position, the arms 20 of the link 21 andone of the bosses 28 are provided with the keyways or clearance spaces52 and 53 respectively. The keyways 50* and 51a are so located, as shownby the full line positions of the valve actuating parts in Figs. 1 and2, that the keys 50 and 51 can not be brought intoalignment with theirrespect-ive keyways 52 and 53 in the ordinary operation of the valve.When the casting 14 is disconnected from the main casing 10 it becomespossible to move the links, so that the keyways 50a and 51a will bebrought into alignment with the keyways 52 and 53 respectively, thusbringing the keys 50 and 51 into alignment with the latter keyways andpermitting the removal of the pins 22 and 26. f

E. Interchangeable means for Aactuar/tang' Zink lmechamlm, and aal/ve.

The casting' 14 has formed, preferably-inl tegral therewith, ayoke 60,the upper end of nuts 65, `66, screwed' respectively upon the outercircumference of 'the spindle nut 62 and the inner circumference of thehead `piece 61, to form' a bearing cage in which the friction bearingy67 and washer 68, as shown in Fig. 1, or the ball bearing 69, as shownin Fig. 2, may be interchangeably received. It will be noted that thecombined outer dimensionsof the friction bearing 67 and washer 68 arethe same as' the outer dimensions of the ball bearing 69, and that thespindle nut and head piece are each provided with a shoulder againstwhich the nuts and 66 are seated; said shoulders being so located as toprevent said nutsfrom binding the bearings while preventing longitudinallost motion of the spindle nut. Nut 66 is preferably locked in positionby the screw 70. The upper end of the spindle nut 62 projects outwardlybeyond the nut-s .65, 66 and head piece 61 and is provided with a pairof keyways 71,- 72, preferably arranged at right angles to each other,and which keyways serve to secure the gear wheel 73 and hand wheel 74non-rotatably to the -spindle nut. If desired, b oth a gear wheel andhand wheel may be secured to the spindle nut, as shown in Fig. 2 or iffor any reason it is not feasible to employ both mechanical and manualmeans for actuating the lvalve, the 'hand wheel only, as shown in Fig.1, or a gear wheel only, may be interchangeably mounted and keyed uponthe spindle nut. The outer circumference of the cylindrical head piece61 is machined to receive a bracket 75 which carries a pinion 76 fordriving the gear. The bracket may be of the type shown in Fig. 2 forspur gearing where the power shaft is parallel with the valve spindle orthe bracket 75a as shown in Fig. 2a may1 be. employed where bevel gearsmust be used.

F. Special eonyw'atz'on of the val/ve dise 'valve easing surface.

creasing counter-bore which, in the eX-.

ample shown, takes the form of a conical or tapering surface, althoughany equivalent configuration could be employed. The projecting teat 81of the 'valve .disc is curved as more clearly shown in Fig. 7 to providea re-entrant recess or groove 82 land merges gradually into a widerportion 83 and is then rounded off quite sharply at the .outer edge ofthe teat. The wider portion 83, it will be noted, is dimensioned to fitneatly within the bore of the inlet and extends to a pointv just at, orslightly beyond, the termination of the conical counter-bore 80 when thedisc 17 is seated. The outer rounded edge of the teat and thev graduallydecreasing counter- .'bore cooperate t0 cause the disc'to enter the boreof the inlet 12 without jamming and thereby prevent any chippingor-breaking of the valve disc or casing, while the engagement ofthewider portion 83 with the wall of the bore of the inlet insures theperfect lalignment of the packing rings 8.5, 86, suit-` ably secured tothe disc and casing respectively. The re-entrant groove 82 serves toproduce a Venturi effect upon the fluid passing through the valve whenit is only partially opened, thereby preventing the rapid erosion of thedisc which would otherwise vocur if steam or other fluids'under highpressure impinged directly upon the disc and exit Amouth of the bore. v

G. Valve regndz'ng means (Fig. 8).

Aend of a valve grinding Spanner wrench 92 is'adapted to be engaged. Thecasing 1Q is provided with an inwardly extending web 93 against whichthe shank or handle ofthe Spanner engages, and said Spanner is forcedagainst the outer end of the pressure bolt as the valve disc is rotatedto exert the necessary pressure to insure the `rapid and eiectivegrinding of the valve.

Operation.

The operation of the valveA will be readily understood, rotation of thespindle nut 62 in the proper direction causing the spindle A29 and slide27 to be moved upwardly or downwardly as desired. The slide 27 vis heldagainst rotation by its connection with the link mechanism. Assumingthat the spindle nut is rotated in a direction to move the yspindle andslide downwardly it will be obvious that the yoke-shaped link 21 willswing the supporting arm 18 upon its pivot pin 19 and cause the dise tobe moved to its closed position, shown in Fig. 2; the pres sure of thearm holding the packing rings 85, 86 in tightly contacting engagement toform a fluid tight joint, and the yielding connection of the pressurebolt allowing the valve disc to adjust itself. When the valve is fullyopened, as shown in Fig. 1, little if any ofthe pressure of the fluidpassing through the valve will be exerted against the packing of thestuffing box, due to the provision of the packing rings 31, 33, therebyavoiding the frequent necessity of replenishing or renewing the stutlingbox packing.

The manner in which the gear and hand wheel as well as the bearings maybe interchanged has been hereinbefore described, likewise the .manner inwhich the special conguration o the valve disc and valve casing surfacesfunction.

It will be understood that the principles of construction hereinbeforedescribed are ap licable to many types of swinging disc va ves and thatsuch features as for example the interchangeable hand wheel and gear andthe 'interchangeable bearings for the spindle are of general applicationto Valves of any type. It will be also understood that many changes,variations and modifications of the specific construction hereindescribed and illustrated may also be resorted to without departing fromthe spirit of our invenpositions to which said members are moved saidmembers are movedv beyond their normal limits of movement. l

3. A swinglng -disc valve comprising a valve disc, actuating mechanismto swing said disc, a pressure bolt for connecting vsaid disc to saidmechanism, a key to secure said pressure bolt in position and a lockingmember secured to said key to prevent accidental disconnection of saidkey.

4. A swinging disc valve comprising a valve disc, actuating mechanism toswing said disc, a pressure bolt for connecting said disc to saidmechanism, a key to secure said pressure bolt in position and a lockingmember secured to said key to prevent accidental disconnection of saidkey, said locking member having a bendable shank portion bent intoengagement with a portion of said actuating mechanism to hold said keysecurely in position.

5. A swinging disc valve comprising a valve disc, actuatingv mechanismto swlng said disc, a pressure bolt for connecting said disc to saidmechanism, a key to secure said pressure bolt in position and a lockingmember secured to said key to prevent accidental disconnection of saidkey, said locking member having a portion thereof extending beyond theside edges of said key to prevent said key from becoming entirelydisconnected from said ressure bolt.

6. A swin ing disc valve comprising a valve disc, actuating mechanism toswing said disc, a pressurel bolt for connecting said disc to saidmechanism, a key to secure said pressure bolt in position and a lockingmem-v ber secured to said key to prevent accidental disconnection ofsaid key, said locking meminto engagement with a portion of saidactuating mechanism to hold said key securely in position, and saidlocking member being fur ther' provided with a portion extending beyondthe side edges of said key to prevent said key from becoming entirelydisconnected from said pressure bolt ifsaid shank portion should becomedisengaged from said actuating mechanism.

7. In a valve, a casing, a valve actuating spindle, a'stuiiing box andpacking therefor, a pair of annular metal rings constructed of -a hardnon-corrosive material, one of said rings being within said casingadjacent to said stuiling box and firmly embedded within a mass of thecasing material surrounding the spindle, and the other of said ringsbeing rmly embedded within a mass of material surrounding said spindle,said rings being provided with cooperating plane sur-' faces ground vtoprovide a fluid tight joint.

8.111 afvalve, a hollow 'cylindrical head piece, a nut, to which a gearis adapte-d to be secured mounted within said head piece, a spindlethreaded in said nut, said nut and 1 spindle being rotatable relativelyto one anpiece forming a bearing cage, of a friction bearing and a. ballbearing, said bearings having the same outer dimensions so that each isadapted to be interchangeablyref Lacasse cage, and a shoulder in saidhead vpiece for preventing said nut from being clamped tightly againstsaid bearings. 10. In a valve, av casing, a swinging disc Vvalvehaving aprojecting cylindrical-teilt,

a pair of annular metal rings constructed of f a hard non-corrosivematerial surrounding .said spindle, one of said rings being firmly'embedded within a mass of the casin .ma- 'terial and the other of saidrings ing firmly embedded within a casting secured to the lower end ofsaid spindle, said rings be ing provided with `cooperating lane surfacesground to l'ovide a iuid tight joint, one of said rings aving a wideseating surface and-the other of said rings having a relatively smallseating surface.

12. In a valve, a hollow cylindrical head piece, a nut membermountedpwithin said head piece and ai spindle member having ascrew-threaded portion mounted in` said nut, said members beingrotatable relatively to one another, one of -said members beingconstructed or, the attachment of a. gear thereto and said head piecebeing provided with an annular machined'bearingsurface encircling saidspindle and a bracket having bearing surface arrang' a machined bearingsurface in engagement with said first named bear' surface and secured tosaid head piece, said bracket being provided withxdriving means inclu agear arranged in meshing engagement wit said first named gear. j

13. In a valve, a hollow .cylindrical headl piece, a nut member mountedwithin said ead piece, a spindle member having a; i screw-threadedportion mounted in said nut,

said members being rotatable relatively to one another, one of saidmembers being constructed for. the attachment of a ear thereto, saidhead piece bein concentrically of said indle and a bracket, havinganlachinetslpbearing surface in engagement with said concentric bearingsurface and 'secured to said head piece, said bracket having mountedthereon dri-ving means including a gear arranged in meshing engagementwith said first named' gear.

adjacent to said rounded outer edge, and

said casing being provided with a counter bore in the passageway of thevalve of gradlprovi ed with af 14. In a valve, a casing, a disc. valvehaving a ually decreasing diameter said teat adapted to engage the wallof said counterbore at its smallest diameter.

15; In a valve, a casing, a bonnet secured to said casing, a -swingingvalve disc, a plurality of pivotally connected members to actuate saiddisc, a plurality of pivot pins on v Vdisc mounted in said casing, 4avalve actuating spindle mounted in said bonnet and means for connectingsaid spindle and disc comprising a plurality of pivotally connectedmembers, detachable pivot pins for connectingA said members, retainingdevices secured to said pivot' pins and a lurality of said members beingprovided with slots for said retaining devices, the slot for eachretaining device being inovable into alignment therewith to permit thepassage therethrough of saidj retaining device and removal of said pinsonly-when said bonnet is detached from said casing.

17. In a valve, a casing, a bonnet secured to said casing, a slidemember ywithin said bonnet, a swinging valve disc, a plurality ofpivotallyconnected links to actuate said disc, a plurality of pivot pinsfor connecting said slide member and `said links, and retaining membersxedl sedpred to said pins for preventing any 'sconnection of said linksfrom said slidemember or from each other in any ofthe ositions to lwhichsaid links are moved in t e normal operation of said valve, andpermitting disconnection of said sliding member and' said links onlywhen said bonnet is disconnected.

18. In a valve, a casing having a bonnet v detachably secured thereto,aswinging valve through ofV said 'reta' device and remova-l of said pinsonly w ensaid bonnet is detached fi'om'said casing, and said devicesbeing of such length and' so located on said pivot pins that they willage wit n said slots to prevent the pivola movement of said members whensaid pivot-pins are not located'in their proper operating position,while when said pins are located in their proper'operating position,said devices lvill permit pivotal movement of said memers.

19. In a valve, casing, a bonnet detachably secured to said casing, avalve disc mounted in said casing, a valve actuating spindle mounted insaid bonnet, and means for operatively connecting said spindle and valvedisc comprising a slide member associated with said valve, an armassociated with said valve disc, a link in engagement with said arm andslide member, a pair of pivot pins 15 for pivotally connecting said linkwith said slide memberxand arm, 'a retaining key secured to each of saidpivot peins, said slide member, arm and said link ing provided with aplurality of keyways arranged to form a cooperatlng pair for each ofsaid retaining keys, one member of each pair of keyways being locatedout of alignment with its companion keyway when said bonnet is inoperative position on said casing, and being movable into ali net isdetached om saidcasing.

In testimony whereof we have hereunto set our hands. KARL MARSCHEIDER.

SALINGR.

Inent only when said bon-

